Curse the Darkness

You are trying to read in a dark room. The room contains
many candles, but none are lit. You are considering that it
might be worthwhile to light one, but before you do you want to
be certain that it will actually light your book. You only get
to light one and each is bright enough to cast light in a
radius of $8$ meters. You
are a stubborn reader and you are not willing to move your book
or one of the candles.

Input

Input begins with an integer $0 \le m \le 50$, giving the number of
test cases that follow. A test case begins with the real-valued
$X, Y$ location of your
book. This is followed by an integer $0 \le n \le 1\, 000$, giving the
number of candles in the room and the real-valued $X, Y$ locations of each candle. All
locations are measured in meters. All real values in the input
are in the range $-1\,
000$ to $1\, 000$
and have at most $7$
digits past the decimal point.

Output

For each test case, output “light a candle” if there is a
candle close enough to cast light on the position of your book.
Otherwise, output “curse the darkness”.